Controllable synthesis and SERS characteristics of hollow sea-urchin gold nanoparticles (Articolo in rivista)

Type
Label
  • Controllable synthesis and SERS characteristics of hollow sea-urchin gold nanoparticles (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1039/c4cp04017a (literal)
Alternative label
  • Li, Junpeng; Zhou, Jùn; Jiang, Tao; Wang, Binbing; Gu, Min; Petti, Lucia; Mormile, Pasquale (2014)
    Controllable synthesis and SERS characteristics of hollow sea-urchin gold nanoparticles
    in PCCP. Physical chemistry chemical physics (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Li, Junpeng; Zhou, Jùn; Jiang, Tao; Wang, Binbing; Gu, Min; Petti, Lucia; Mormile, Pasquale (literal)
Pagina inizio
  • 25601 (literal)
Pagina fine
  • 25608 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.scopus.com/record/display.url?eid=2-s2.0-84908592849&origin=inward (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 16 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 46 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Institute of Photonics, Faculty of Science, Ningbo University, Ningbo 315211, Zhejiang, China. zhoujun@nbu.edu.cn. Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia. Institute of Cybernetics \"E. Caianiello\" of CNR, Via Campi Flegrei 34, 80072 Pozzuoli, Italy. (literal)
Titolo
  • Controllable synthesis and SERS characteristics of hollow sea-urchin gold nanoparticles (literal)
Abstract
  • Hollow sea-urchin gold nanoparticles (HSU-GNPs) were successfully prepared through a novel one-step galvanic replacement strategy, and their corresponding optical properties was studied in detail. During the synthesis process, the sizes of the interior hollows of the HSU-GNPs could be changed by adjusting the amount of silver nitrate added into hydrogen tetrachloroaurate trihydrate solution. The absorption spectra of the HSU-GNPs showed that the localized surface plasmon resonance (LSPR) peaks were red-shifted with increasing size of the interior hollows in the HSU-GNPs. When the added amount of silver nitrate was up to 6 mul, the LSPR peak of the synthesized HSU-GNP reached 726 nm as a maximum red-shift. Furthermore, the absorption spectra of the HSU-GNPs with different morphologies were theoretically simulated by the finite element method, which was consistent with the experimental results and explained the origin of the red-shift of the LSPR peaks. In addition, the surface-enhanced Raman scattering (SERS) of the sea urchin gold nanoparticles were also investigated using 4-mercaptobenzoic acid as a Raman reporter molecule. Both the experimental and calculated results showed that the HSU-GNPs had stronger SERS enhancement than the solid sea-urchin gold nanoparticles. In particular, the HSU-GNPs prepared by adding 6 mul silver nitrate exhibited a maximum SERS enhancement factor, EF = 1.1 * 10(9), due to the LSPR peak at 726 nm which is near to the excitation wavelength, 785 nm. This feature is significant for designing a biosensor with a super-high sensitivity based on the morphology of the HSU-GNPs. (literal)
Prodotto di
Autore CNR

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
data.CNR.it